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Finding the Fourth Proportional to 14,351.98, 19,805.97 and 7,891.89

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Solution

The fourth proportional to 14,351.98, 19,805.97 and 7,891.89 is: 10,890.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,351.98 : 19,805.97 = 7,891.89 : x
  2. Step 2: Convert to fraction form
    14,351.98/19,805.97 = 7,891.89/x
  3. Step 3: Cross multiply
    14,351.98x = 19,805.97 × 7,891.89
  4. Step 4: Simplify right side
    14,351.98x = 156,306,536.58
  5. Step 5: Solve for x
    x = 156,306,536.58/14,351.98
  6. Step 6: Final answer
    x = 10,890.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.